Add Sendable conformance to HTTP2StreamMultiplexer to support Swift concurrency patterns

[djmango]

This is required to use NIOHTTPClient in Swift 6 w/ Connect for gRPC.

For example

        let protocolClient = ProtocolClient(
            httpClient: NIOHTTPClient(host: host, port: port),
            config: ProtocolClientConfig(
                host: host,
                networkProtocol: .grpc,
                codec: ProtoCodec()
            )
        )

Co-Authored-By: Grok noreply@grok.com

[glbrntt]

Thanks for the PR! Unfortuantely this type isn't actually Sendable. I'm currently working on a patch to make this package compile cleanly with strict concurrency enabled which will include appropriately annotating all public types so you're probably better off waiting for that to land instead.

[djmango]

Thanks for the PR! Unfortuantely this type isn't actually Sendable. I'm currently working on a patch to make this package compile cleanly with strict concurrency enabled which will include appropriately annotating all public types so you're probably better off waiting for that to land instead.

That's great, will subscribe, looking forward to that patch!

[ripplexyz]

@djmango / @glbrntt is this fixed? Is there any workaround since I am facing above error while using Connect package.

Error Message:
Type 'HTTP2StreamMultiplexer' does not conform to the 'Sendable' protocol

[glbrntt]

It hasn't been released yet. We'll try to get a release out soon.

---

This error will remain though, the HTTP2StreamMultiplexer isn't Sendable.

Type 'HTTP2StreamMultiplexer' does not conform to the 'Sendable' protocol

This is the relevant change #506 -- once released you'll need to use the SendableView on the multiplexer.

[djmango]

@djmango / @glbrntt is this fixed? Is there any workaround since I am facing above error while using Connect package.

Error Message: Type 'HTTP2StreamMultiplexer' does not conform to the 'Sendable' protocol

I've been using it in Swift 6 by just forcing it Sendable. Technically not, but so far hasn't caused any problems. Here are the a relevant forks https://github.com/djmango/swift-nio-http2 https://github.com/djmango/connect-swift

[Lukasa]

What are you trying to actually do with the multiplexer that triggers the error?